Vejailla problem,Took me 1 hour to finish

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int m,n;
    printf("Number of rows(first matrix):?\n");
    scanf("%d",&m);
    printf("Number of columns?(first matrix):\n");
    scanf("%d",&n);

    printf("Enter The value of Matrix(first matrix):\n");

int i,j,ar[m][n];

    for(i=1;i<=m;i++)
    {

        for(j=1;j<=n;j++)
            {
                printf("Enter the %d Row and %d Column:",i,j);
                scanf("%d",&ar[i][j]);
            }
    }
    printf("Given Matrix:\n");

    for(i=1;i<=m;i++)
        {
            for(j=1;j<=n;j++)
            {
                printf("%d\t",ar[i][j]);
            }
            printf("\n");
        }
        int q,w;
    printf("Number of rows?(Second matrix):\n");
    scanf("%d",&q);
    printf("Number of columns?(Second matrix):\n");
    scanf("%d",&w);

    printf("Enter The value of Matrix(Second matrix):\n");

int ar1[q][w];

    for(i=1;i<=q;i++)
    {

        for(j=1;j<=w;j++)
            {
                printf("Enter the %d Row and %d Column:",i,j);
                scanf("%d",&ar1[i][j]);
            }
    }
    printf("Given Matrix(Second matrix):\n");

    for(i=1;i<=q;i++)
        {
            for(j=1;j<=w;j++)
            {
                printf("%d\t",ar1[i][j]);
            }
            printf("\n");
        }
        printf("\n");
       printf("Sum of the two matrixes:\n");
        int add[q][w];
        if(m==q && n==w)
        {


             for(i=1;i<=q;i++)
        {
            for(j=1;j<=w;j++)
            {
            add[i][j]=ar[i][j]+ar1[i][j];
            }
            printf("\n");
        }

            for(i=1;i<=q;i++)
        {
            for(j=1;j<=w;j++)
            {

                printf("%d\t",add[i][j]);
            }
            printf("\n");
        }
        }
        else
        {
                printf("Error");
        }

 return 0;
}